The True Believer: Thoughts on the Nature of Mass Movements by Eric Hoffer is a profound analysis of the psychology behind fanaticism and collective movements. Hoffer explores why individuals are drawn to extremist ideologies—whether political, religious, or social—and how dissatisfaction, resentment, and a desire for purpose fuel mass uprisings. With sharp observations on leaders, followers, and the dynamics of revolutionary change, the book offers timeless insights into the forces that shape history. A classic in political philosophy,The True Believer remains a crucial work for understanding the psychology of radicalism and social change.